About Us

Licensed and insured, Four Walls, Inc. is a trusted energy consulting firm in the Portland, Oregon metro region. Led by Ron Nardozza, Four Walls has more than 45 years of combined experience. Experienced and professional, we predict how buildings use energy, helping clients understand the energy and cost savings of their buildings. We are long-time residents of the Pacific Northwest and enjoy working with builders, architects, engineers and real estate professionals to create high-quality buildings that deliver high value.

Ron Nardozza, Founder and President

An Oregon native, Ron Nardozza attended the University of Oregon where he received a bachelor of arts in construction management. Since 1974, he has been a licensed general contractor (OR CCB). Ron has worked as a custom home builder, home remodeler, commercial tenant improvement manager and a certified home inspector.

As Founder and President of Four Walls, Inc, Ron is committed to advancing energy efficiency in the residential and commercial sectors in Oregon and Washington. Having completed thousands of home energy audits, he is dedicated to improving testing and verification techniques.

Todd Poehlman, Associate

Todd Poehlman joined Four Walls, Inc. in 2016. He provides energy modeling services and conducts site visits to verify projects for code compliance and green building programs.

Todd began his career in the energy efficiency and building sector working for Energy Trust of Oregon’s New Homes program, where he managed quality assurance. He met with verifiers, subcontractors, and builders during field quality assurance visits to ensure program requirements were being met while offering on-site guidance and support.

Todd also offered technical guidance and energy modeling support to Oregon and Washington Energy Trust trade allies. During his five-year tenure at Energy Trust, the New Homes program reviewed and approved 10,000 new construction projects.

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Ron Nardozza, Owner

If you're a home builder, architect, real estate developer, engineer or realtor serving clients in the Pacific Northwest, please get in touch to let us know how we can be of service with your next energy-efficiency project. We look forward to hearing from you.